The Anarchy

At a Glance

The Conflict: A dynastic struggle for the English throne (1135–1154) between cousins Stephen of Blois and Empress Matilda.
The Cause: The death of Henry I’s only legitimate son in the White Ship disaster, leaving the succession in dispute.
Social Impact: Known as the time "when Christ and his saints slept" due to widespread lawlessness and famine.
Castle Building: A boom in "adulterine" castles—fortresses built without royal permission by predatory local barons.
Resolution: The Treaty of Wallingford, which recognised Matilda’s son, Henry II, as Stephen’s rightful heir.

Read All About The Anarchy

Posted on April 12, 2026

Empress Matilda and the Anarchy: A Comprehensive Briefing

Empress Matilda’s defiance during "The Anarchy" redefined medieval power. As the first woman to claim the English throne, she survived harrowing sieges and political betrayal to secure the Plantagenet dynasty. Though never crowned Queen, her tenacity as a military leader and advisor ensured her son, Henry II, inherited a kingdom.

Posted on February 17, 2026

Castles of Conflict: Fortresses of the Anarchy Era in England

Civil war placed huge pressure on existing castle defences and fuelled intense innovation in military architecture.

Posted on February 16, 2026

The Anarchy Civil War in Medieval England

The Anarchy was a destructive civil war in 12th century England sparked by a disputed royal succession that plunged the country into nearly 20 years of conflict and chaos.

Posted on February 12, 2026

The Church and the Crown: The Role of Religion in the Anarchy

The article will offer a detailed exploration of the role of religion in the Anarchy, with a specific focus on the Church's power in Medieval England's Anarchy, enriching our understanding of this tumultuous period in history.

Posted on February 7, 2026

Empress Matilda and the Civil War in England

Empress Matilda's 17-year fight for the English crown in The Anarchy set new precedents through the tenacity and skill she displayed. Matilda helped catalyse England’s onward march away from the tumults and uncertainties of the Norman succession towards a more stable dynastic realm under her descendants.

The Anarchy

The Anarchy was a brutal nineteen-year civil war sparked by a succession crisis after the death of Henry I. Pitting King Stephen against Empress Matilda, the conflict devastated the English countryside, led to the rise of lawless "adulterine" castles, and only ended with the accession of the first Plantagenet king.

Frequently Asked Questions

Who was Empress Matilda and why was her claim contested?

Matilda was the daughter of Henry I and the widow of the Holy Roman Emperor. Although Henry I forced his barons to swear an oath to support her, many resisted the idea of a female ruler. Her cousin Stephen seized the treasury and the throne while she was in Normandy, sparking the war.

What were "adulterine" castles?

These were unlicensed castles built by local lords during the breakdown of royal authority. Barons used these strongholds to dominate the local population, extract taxes, and wage private wars. One of Henry II's first acts as king was to order the destruction of these illegal fortresses.

What happened at the Battle of Lincoln in 1141?

This was a major turning point where King Stephen was captured by Matilda’s forces. Matilda briefly became "Lady of the English," but her arrogant manner and attempt to tax the citizens of London led to an uprising that chased her from the city before she could be crowned Queen.

How did the "White Ship" disaster cause the war?

In 1120, the White Ship sank in the English Channel, carrying William Adelin, the only legitimate male heir of Henry I. His death left a power vacuum. Without a clear male successor, the door was opened for the competing claims of Matilda and Stephen fifteen years later.

How did the Anarchy finally end?

The war ended through exhaustion and diplomacy. After the death of Stephen's son Eustace, Stephen had little left to fight for. The Treaty of Wallingford (1153) allowed Stephen to keep the throne for life on the condition that Matilda’s son, Henry of Anjou, would succeed him, beginning the Plantagenet era.